GB1066258A - Improved process for preparing crystalline zeolites - Google Patents

Improved process for preparing crystalline zeolites

Info

Publication number
GB1066258A
GB1066258A GB50147/64A GB5014764A GB1066258A GB 1066258 A GB1066258 A GB 1066258A GB 50147/64 A GB50147/64 A GB 50147/64A GB 5014764 A GB5014764 A GB 5014764A GB 1066258 A GB1066258 A GB 1066258A
Authority
GB
United Kingdom
Prior art keywords
na2o
sio2
al2o3
hours
silica
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB50147/64A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WR Grace and Co
Original Assignee
WR Grace and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WR Grace and Co filed Critical WR Grace and Co
Publication of GB1066258A publication Critical patent/GB1066258A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
    • C01B33/28—Base exchange silicates, e.g. zeolites
    • C01B33/2807—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures
    • C01B33/2838—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures of faujasite type, or type X or Y (UNION CARBIDE trade names; correspond to GRACE's types Z-14 and Z-14HS, respectively)
    • C01B33/2853—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures of faujasite type, or type X or Y (UNION CARBIDE trade names; correspond to GRACE's types Z-14 and Z-14HS, respectively) of type Y
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
    • C01B33/28—Base exchange silicates, e.g. zeolites
    • C01B33/2807—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures
    • C01B33/2892—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures containing an element or a compound occluded in the pores of the network, e.g. an oxide already present in the starting reaction mixture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S423/00—Chemistry of inorganic compounds
    • Y10S423/21—Faujasite, e.g. X, Y, CZS-3, ECR-4, Z-14HS, VHP-R

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

A synthetic crystalline zeolite (faujasite, or Z-14HS zeolite) of formula Na2O:Al2O3:xSiO2 : nH2O where 3.2<x<6.0, and n\sF0 but <9, which has an effective pore size of <\>t13<\>rr176d is convertible into the hydrogen form without appreciable collapse of its crystal structure, is prepared from an aqueous mixture of sodium hydroxide, alumina and fine-sized silica, which has been previously calcined at 90-650 DEG C. for 0.1 to 72 hours, by ageing, and heating to between 50 DEG and 120 DEG C. to crystallize the faujasite. The molar proportions of the reactants are: Na2O/SiO2 = 0.17 to 1, SiO2/Al2O3 = 6 to 40, H2O/Na2O = 20 to 80. The silica is preferably calcined at 90-150 DEG C. until its water content is below 4.5% by weight, or at 155-650 DEG C. until its water content is 0.5 to 4.2%. Before calcination, the silica preferably has an average particle diameter of 0.01-10m . The reaction mixture may be made by mixing silica in water with a solution of alumina in sodium hydroxide by either the " slurry " process, in which the molar ratios of reactants are Na2O/SiO2 = 0.25 to 1 preferably 0.5, SiO2/Al2O3 = 10 to 40, e.g. <\>t20, H2O/Na2O = 20 to 80, e.g. <\>t40, or by the preferred "paste" process in which the molar reactant ratios are Na2O/SiO2 = 0.17 to 0.60, e.g. 0.3 to 0.36, SiO2/Al2O3 = 6 to 12, e.g. 8 to 10, H2O/Na2O = 25 to 75, e.g. 40. The mixture may be aged at 20-60 DEG C. for 3-300 hours, and then may be heated at 75-100 DEG C. for 3-72 hours, or at 90-110 DEG C. for 16-72 hours. The zeolite may then be converted to the hydrogen, alkali metal, alkaline earth metal, e.g. calcium or rare earth metal cation forms.
GB50147/64A 1964-01-13 1964-12-09 Improved process for preparing crystalline zeolites Expired GB1066258A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US337132A US3264059A (en) 1964-01-13 1964-01-13 Process for the preparation of synthetic faujasite

Publications (1)

Publication Number Publication Date
GB1066258A true GB1066258A (en) 1967-04-26

Family

ID=23319250

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50147/64A Expired GB1066258A (en) 1964-01-13 1964-12-09 Improved process for preparing crystalline zeolites

Country Status (3)

Country Link
US (1) US3264059A (en)
DE (1) DE1293730B (en)
GB (1) GB1066258A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374058A (en) * 1964-12-08 1968-03-19 Grace W R & Co Process for preparing a crystalline zeolite
US3428574A (en) * 1965-12-03 1969-02-18 Universal Oil Prod Co Crystalline zeolite
US5785944A (en) * 1996-07-31 1998-07-28 Chevron U.S.A. Inc. Preparation of Y zeolite
US8992884B2 (en) * 2009-11-30 2015-03-31 Chevron U.S.A. Inc. Preparation of X zeolite
US10329508B2 (en) 2014-07-25 2019-06-25 Hamilton Sundstrand Corporation Fuel additive and method of preparing the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2924510A (en) * 1956-12-24 1960-02-09 Columbia Southern Chem Corp Method of preparing pigments
BE571380A (en) * 1957-09-21
DE1106297B (en) * 1958-01-02 1961-05-10 Bayer Ag Process for calcining silicic acid and silicate fillers obtained by precipitation
US3059997A (en) * 1958-12-18 1962-10-23 Socony Mobil Oil Co Inc Method for preparing siliceous aerogels
US3081154A (en) * 1959-11-17 1963-03-12 Grace W R & Co Process for preparing fine size silica
US3130007A (en) * 1961-05-12 1964-04-21 Union Carbide Corp Crystalline zeolite y

Also Published As

Publication number Publication date
DE1293730B (en) 1969-04-30
US3264059A (en) 1966-08-02

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